LHR → USM
Cheap flights from London to Ko Samui
We track fares from London to Ko Samui, Thailand every day. Across 130 prices we've logged, the cheapest was €717 return and a typical fare runs around €859. The cheapest month to fly is usually Nov 2026.
Cheapest seen
€717
Typical price
€859
Cheapest month
Nov 2026
Non-stop
With a stop
No live deal on this exact route right now — but the typical fare is around €859. Search your dates below, or browse all current deals.
Cheapest months to fly
The typical cheapest fare by month, from our tracking — a guide only. Check the live price on Aviasales before booking.
| Month | Typical from | Check price |
|---|---|---|
| Nov 2026 | €756 | Check on Aviasales → |
| Dec 2026 | €794 | Check on Aviasales → |
| Mar 2027 | €831 | Check on Aviasales → |
Each link opens the live Aviasales search for that month, where you can pick the exact cheapest dates.
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London to Ko Samui: the basics
- Route
- London (LHR) → Ko Samui (USM)
- Distance
- 9,896 km
- Non-stop
- No (with a stop)
- Airlines seen
- Aegean Airlines, Air India, ITA Airways, Air China, China Southern, Etihad Airways
Planning the trip? Thailand: what to see and when to go covers where to go and when.
Where these flights connect
There is no non-stop flight from London to Ko Samui. Based on the airlines that fly this route, connections are usually through Athens, Rome, Abu Dhabi — worth checking when you compare fares.